Remove unnecessary `.max(255)` #5290

Job	Run time
msrv	1m 22s
rustfmt-clippy	1m 43s
wasi	1m 28s
build-windows (cargo-build, x86_64-pc-windows-msvc)	3m 49s
build-macos (Cargo build (x64), cargo-build, x86_64-apple-darwin)	1m 51s
build-unix (beta-build)	2m 59s
build-windows (cargo-test, x86_64-pc-windows-msvc)	7m 27s
build-macos (Cargo test (x64), cargo-test, x86_64-apple-darwin)	2m 56s
build-unix (1.74.0-tests)	5m 34s
build-windows (cargo-c, x86_64-pc-windows-gnu)	8m 21s
build-macos (Cargo C-build (x64), cargo-c, x86_64-apple-darwin)	3m 5s
build-unix (aom-tests)	4m 42s
build-macos (Cargo build (Arm64), cargo-build, aarch64-apple-darwin)	1m 50s
build-unix (dav1d-tests)	5m 57s
build-macos (Cargo C-build (Arm64), cargo-c, aarch64-apple-darwin)	2m 45s
build-unix (no-asm-tests)	8m 17s
build-unix (grcov-codecov)	9m 55s
build-unix (bench)	3m 55s
build-unix (doc)	2m 1s
build-unix (cargo-c)	4m 58s
build-unix (check-no-default)	1m 14s
build-unix (check-extra-feats)	2m 31s
build-unix (check-unstable-feats)	2m 28s
build-unix (fuzz)	5m 42s
build-unix (dav1d-tests-arm64, stable)	5m 49s
	1h 42m 39s

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